英語翻譯
1、One of the most famous puzzles in the math world is“How old is Ann?”Here's one.Ann is now exactly two-fifths of her older sister's age.Conversely,two years ago,Ann was only one-fourth the age of her older sister's age at that time.How old is Ann now?(She's a fairly young child,by the way)
2、You have stealthily raided your small child's piggy bank.You feel slightly guilty as you count the money.You have the same number of dimes and quarters(二角五分硬幣）,totaling exactly Yuan 2.45.When you turn honest and put it back,how many of each coin will you need to replace?(Your child keeps a record of how much she puts in and in what denomination(面額）,of course.)